Estudio geotécnico in Vilamartín de Valdeorras

In Vilamartín de Valdeorras, metamorphic materials predominate, mainly phyllites and schists, which cover most of the geotechnical subsoil. These soils are characterised by being very poorly permeable, although they can host shallow aquifers associated with fracturing. The mechanical characteristics of the phyllites and schists allow generally favourable bearing capacities for shallow foundations, although they may require local checks of fracturing and any potential planes of weakness. Limestones and dolomites, present to a lesser extent, usually do not significantly influence routine foundation practice.

The seismicity recorded in the municipality is very low, with only 5 events over three decades and a maximum magnitude of 3.2, so the seismic hazard for structural design is low and is not considered a relevant limiting factor. The dominant subsoil is not clayey, so volumetric expansions linked to clays are not present and the risk of expansivity can be ruled out. In summary, the main geotechnical factor to consider in Vilamartín de Valdeorras will be the assessment of the fracturing of the schists and phyllites to ensure a safe and stable foundation.